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<!-- Weave of 'Routines' generated by Inweb -->
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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../compiler.html" > Inform7< / a > < / li > < li > < a href = "index.html" > runtime< / a > < / li > < li > < a href = "index.html#4" > Chapter 4: Compilation Utilities< / a > < / li > < li > < b > Routines< / b > < / li > < / ul > < / div >
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< p class = "purpose" > To compile the bones of functions, and their local variable declarations.< / p >
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< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. < / b > To... phrases live here:
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Routines::prepare_for_requests< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > id_body< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > idb< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > idb< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > compilation_data< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > requests_package< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP4" class = "function-link" > < span class = "function-syntax" > Hierarchy::package< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > idb< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > compilation_data< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > owning_module< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > PHRASES_HAP< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > }< / span >
< / pre >
< p class = "commentary firstcommentary" > < a id = "SP2" class = "paragraph-anchor" > < / a > < b > § 2. < / b > The code following is used throughout Inform, whenever we want to compile
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a function. Sometimes that's in order to define a phrase, but often not.
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< / p >
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< p class = "commentary" > There are two ways to begin a function: specifying a stack frame which has
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already been set up, or not. Here's not:
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > packaging_state< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Routines::begin< / span > < button class = "popup" onclick = "togglePopup('usagePopup1')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup1" > Usage of < span class = "code-font" > < span class = "function-syntax" > Routines::begin< / span > < / span > :< br / > List Together - < a href = "4-lt.html#SP3_1" > § 3.1< / a > < br / > Text Literals - < a href = "4-tl.html#SP13_2" > § 13.2< / a > < br / > Text Substitutions - < a href = "4-ts.html#SP11" > § 11< / a > < br / > Responses - < a href = "4-rsp.html#SP5_1" > § 5.1< / a > , < a href = "4-rsp.html#SP5_2" > § 5.2< / a > , < a href = "4-rsp.html#SP6_2" > § 6.2< / a > < br / > Rules - < a href = "4-rls.html#SP3_1" > § 3.1< / a > , < a href = "4-rls.html#SP5" > § 5< / a > , < a href = "4-rls.html#SP7" > § 7< / a > , < a href = "4-rls.html#SP8_1_1" > § 8.1.1< / a > , < a href = "4-rls.html#SP12_1" > § 12.1< / a > , < a href = "4-rls.html#SP14" > § 14< / a > < br / > Equations Support - < a href = "4-es.html#SP1" > § 1< / a > < br / > Test Scripts - < a href = "4-ts2.html#SP3" > § 3< / a > < br / > Internal Test Cases - < a href = "4-itc.html#SP4" > § 4< / a > < br / > Use Options at Run Time - < a href = "4-uoart.html#SP1_1" > § 1.1< / a > , < a href = "4-uoart.html#SP1_2" > § 1.2< / a > < br / > Variables - < a href = "4-vrb.html#SP5_1" > § 5.1< / a > < br / > Measurements - < a href = "4-msr.html#SP1" > § 1< / a > < br / > Adjectives - < a href = "4-adj.html#SP3_2" > § 3.2< / a > , < a href = "4-adj.html#SP5" > § 5< / a > < br / > Runtime Support for Kinds - < a href = "4-rsfk.html#SP19_3" > § 19.3< / a > , < a href = "4-rsfk.html#SP27_1" > § 27.1< / a > , < a href = "4-rsfk.html#SP27_2" > § 27.2< / a > , < a href = "4-rsfk.html#SP27_3" > § 27.3< / a > , < a href = "4-rsfk.html#SP27_4" > § 27.4< / a > , < a href = "4-rsfk.html#SP27_5" > § 27.5< / a > , < a href = "4-rsfk.html#SP27_6_1" > § 27.6.1< / a > , < a href = "4-rsfk.html#SP27_6_2" > § 27.6.2< / a > , < a href = "4-rsfk.html#SP27_6_3" > § 27.6.3< / a > , < a href = "4-rsfk.html#SP27_6_4" > § 27.6.4< / a > , < a href = "4-rsfk.html#SP27_6_5" > § 27.6.5< / a > , < a href = "4-rsfk.html#SP27_6_6" > § 27.6.6< / a > , < a href = "4-rsfk.html#SP28" > § 28< / a > < br / > Extension Files at Run Time - < a href = "4-efart.html#SP1" > § 1< / a > < br / > Verbs at Run Time - < a href = "4-vart.html#SP4_1" > § 4.1< / a > , < a href = "4-vart.html#SP4_2" > § 4.2< / a > < br / > Relations at Run Time - < a href = "4-rart.html#SP4" > § 4< / a > , < a href = "4-rart.html#SP4_2" > § 4.2< / a > , < a href = "4-rart.html#SP6" > § 6< / a > , < a href = "4-rart.html#SP18_1" > § 18.1< / a > , < a href = "4-rart.html#SP18_2" > § 18.2< / a > , < a href = "4-rart.html#SP18_3" > § 18.3< / a > , < a href = "4-rart.html#SP18_4" > § 18.4< / a > , < a href = "4-rart.html#SP18_5" > § 18.5< / a > , < a href = "4-rart.html#SP18_6" > § 18.6< / a > , < a href = "4-rart.html#SP19" > § 19< / a > , < a href = "4-rart.html#SP23" > § 23< / a > < br / > Literal Patterns at Run Time - < a href = "4-lpart.html#SP2" > § 2< / a > < br / > Runtime Support for Tables - < a href = "4-rsft.html#SP2" > § 2< / a > , < a href = "4-rsft.html#SP5" > § 5< / a > < br / > Phrase Requests - < a href = "4-pr.html#SP9" > § 9< / a > < br / > Phrases as Values - < a href = "4-cls.html#SP3_2" > § 3.2< / a > < br / > Naming - < a href = "5-nmn.html#SP2" > § 2< / a > < br / > Backdrops - < a href = "5-bck.html#SP2_1" > § 2.1< / a > , < a href = "5-bck.html#SP2_2" > § 2.2< / a > < br / > Regions - < a href = "5-rgn.html#SP2" > § 2< / a > < br / > The Map - < a href = "5-tm.html#SP4" > § 4< / a > < br / > Showme Command - < a href = "5-sc.html#SP2" > § 2< / a > < br / > Scenes - < a href = "5-scn.html#SP2" > § 2< / a > , < a href = "5-scn.html#SP6" > § 6< / a > < br / > Actions - < a href = "5-act.html#SP2" > § 2< / a > < br / > Looping Over Scope - < a href = "5-los.html#SP2_1" > § 2.1< / a > < br / > Named Action Patterns - < a href = "5-nap.html#SP1" > § 1< / a > < br / > Command Grammars - < a href = "5-cg.html#SP7" > § 7< / a > < br / > Command Grammar Lines - < a href = "5-cgl.html#SP2" > § 2< / a > , < a href = "5-cgl.html#SP8" > § 8< / a > < br / > Noun Filter Tokens - < a href = "5-nft.html#SP2" > § 2< / a > < br / > Tokens Parsing Values - < a href = "5-tpv.html#SP1" > § 1< / a > < br / > General Parsing Routines - < a href = "5-gpr.html#SP5" > § 5< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < a href = "4-rtn.html#SP4" class = "function-link" > < span class = "function-syntax" > Routines::begin_framed< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > name< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP3" class = "paragraph-anchor" > < / a > < b > § 3. < / b > During the time when we're compiling the body of the routine,
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we need to keep track of:
< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > ph_stack_frame< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > the stack frame for this routine< / span >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > currently_compiling_nnp< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > is this a nonphrasal stack frame we made ourselves?< / span >
< span class = "identifier-syntax" > inter_package< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > currently_compiling_inter_block< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > where Inter is being emitted to< / span >
< span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > currently_compiling_iname< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > routine we end up with< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP4" class = "paragraph-anchor" > < / a > < b > § 4. < / b > So here is the general version, in which < span class = "extract" > < span class = "extract-syntax" > phsf< / span > < / span > may or may not be a
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pre-existing stack frame:
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > packaging_state< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Routines::begin_framed< / span > < button class = "popup" onclick = "togglePopup('usagePopup2')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup2" > Usage of < span class = "code-font" > < span class = "function-syntax" > Routines::begin_framed< / span > < / span > :< br / > < a href = "4-rtn.html#SP2" > § 2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > ph_stack_frame< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > phsf< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "no iname for routine"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > currently_compiling_iname< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP4_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Prepare a suitable stack frame< / span > < span class = "named-paragraph-number" > 4.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Frames::Blocks::begin_code_blocks< / span > < span class = "plain-syntax" > ();< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > packaging_state< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > save< / span > < span class = "plain-syntax" > = < / span > < a href = "2-emt.html#SP4" class = "function-link" > < span class = "function-syntax" > Emit::unused_packaging_state< / span > < / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > currently_compiling_inter_block< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Produce::block< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), & < / span > < span class = "identifier-syntax" > save< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LocalVariables::declare< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > phsf< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > save< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP4_1" class = "paragraph-anchor" > < / a > < b > § 4.1. < / b > If the < span class = "extract" > < span class = "extract-syntax" > phsf< / span > < / span > argument is set, then we'll use that; otherwise we will
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create a new nonphrasal stack frame.
< / p >
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< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Prepare a suitable stack frame< / span > < span class = "named-paragraph-number" > 4.1< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > phsf< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > phsf< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Frames::new_nonphrasal< / span > < span class = "plain-syntax" > ();< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > currently_compiling_nnp< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > currently_compiling_nnp< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > phsf< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Frames::make_current< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > phsf< / span > < span class = "plain-syntax" > );< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP4" > § 4< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5" class = "paragraph-anchor" > < / a > < b > § 5. < / b > As can be seen, very much more work is involved in finishing a function
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than in starting it. This is because we need to split into two cases: one
where the code we've just compiled required allocation of heap memory
(e.g. for dynamic strings or lists), and another simpler case where it
did not.
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Routines::end< / span > < button class = "popup" onclick = "togglePopup('usagePopup3')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup3" > Usage of < span class = "code-font" > < span class = "function-syntax" > Routines::end< / span > < / span > :< br / > List Together - < a href = "4-lt.html#SP3_1" > § 3.1< / a > < br / > Text Literals - < a href = "4-tl.html#SP13_2" > § 13.2< / a > < br / > Text Substitutions - < a href = "4-ts.html#SP11" > § 11< / a > < br / > Responses - < a href = "4-rsp.html#SP5_1" > § 5.1< / a > , < a href = "4-rsp.html#SP5_2" > § 5.2< / a > , < a href = "4-rsp.html#SP6_2" > § 6.2< / a > < br / > Rules - < a href = "4-rls.html#SP3_1" > § 3.1< / a > , < a href = "4-rls.html#SP5" > § 5< / a > , < a href = "4-rls.html#SP7" > § 7< / a > , < a href = "4-rls.html#SP8_1_5" > § 8.1.5< / a > , < a href = "4-rls.html#SP12_1" > § 12.1< / a > , < a href = "4-rls.html#SP14" > § 14< / a > < br / > Equations Support - < a href = "4-es.html#SP1" > § 1< / a > < br / > Test Scripts - < a href = "4-ts2.html#SP3" > § 3< / a > < br / > Internal Test Cases - < a href = "4-itc.html#SP4" > § 4< / a > < br / > Use Options at Run Time - < a href = "4-uoart.html#SP1_1" > § 1.1< / a > , < a href = "4-uoart.html#SP1_2" > § 1.2< / a > < br / > Variables - < a href = "4-vrb.html#SP5_1" > § 5.1< / a > < br / > Measurements - < a href = "4-msr.html#SP1" > § 1< / a > < br / > Adjectives - < a href = "4-adj.html#SP3_2" > § 3.2< / a > , < a href = "4-adj.html#SP5" > § 5< / a > < br / > Runtime Support for Kinds - < a href = "4-rsfk.html#SP19_3" > § 19.3< / a > , < a href = "4-rsfk.html#SP27_1" > § 27.1< / a > , < a href = "4-rsfk.html#SP27_2" > § 27.2< / a > , < a href = "4-rsfk.html#SP27_3" > § 27.3< / a > , < a href = "4-rsfk.html#SP27_4" > § 27.4< / a > , < a href = "4-rsfk.html#SP27_5" > § 27.5< / a > , < a href = "4-rsfk.html#SP27_6_1" > § 27.6.1< / a > , < a href = "4-rsfk.html#SP27_6_2" > § 27.6.2< / a > , < a href = "4-rsfk.html#SP27_6_3" > § 27.6.3< / a > , < a href = "4-rsfk.html#SP27_6_4" > § 27.6.4< / a > , < a href = "4-rsfk.html#SP27_6_5" > § 27.6.5< / a > , < a href = "4-rsfk.html#SP27_6_6" > § 27.6.6< / a > , < a href = "4-rsfk.html#SP28" > § 28< / a > < br / > Extension Files at Run Time - < a href = "4-efart.html#SP1" > § 1< / a > < br / > Verbs at Run Time - < a href = "4-vart.html#SP4_1" > § 4.1< / a > , < a href = "4-vart.html#SP4_2" > § 4.2< / a > < br / > Relations at Run Time - < a href = "4-rart.html#SP4" > § 4< / a > , < a href = "4-rart.html#SP4_2" > § 4.2< / a > , < a href = "4-rart.html#SP6" > § 6< / a > , < a href = "4-rart.html#SP18_1" > § 18.1< / a > , < a href = "4-rart.html#SP18_2" > § 18.2< / a > , < a href = "4-rart.html#SP18_3" > § 18.3< / a > , < a href = "4-rart.html#SP18_4" > § 18.4< / a > , < a href = "4-rart.html#SP18_5" > § 18.5< / a > , < a href = "4-rart.html#SP18_6" > § 18.6< / a > , < a href = "4-rart.html#SP19" > § 19< / a > , < a href = "4-rart.html#SP23" > § 23< / a > < br / > Literal Patterns at Run Time - < a href = "4-lpart.html#SP2" > § 2< / a > < br / > Runtime Support for Tables - < a href = "4-rsft.html#SP2" > § 2< / a > , < a href = "4-rsft.html#SP5" > § 5< / a > < br / > Phrase Requests - < a href = "4-pr.html#SP9" > § 9< / a > < br / > Phrases as Values - < a href = "4-cls.html#SP3_2" > § 3.2< / a > < br / > Naming - < a href = "5-nmn.html#SP2" > § 2< / a > < br / > Backdrops - < a href = "5-bck.html#SP2_1" > § 2.1< / a > , < a href = "5-bck.html#SP2_2" > § 2.2< / a > < br / > Regions - < a href = "5-rgn.html#SP2" > § 2< / a > < br / > The Map - < a href = "5-tm.html#SP4" > § 4< / a > < br / > Showme Command - < a href = "5-sc.html#SP2" > § 2< / a > < br / > Scenes - < a href = "5-scn.html#SP2" > § 2< / a > , < a href = "5-scn.html#SP6" > § 6< / a > < br / > Actions - < a href = "5-act.html#SP2" > § 2< / a > < br / > Looping Over Scope - < a href = "5-los.html#SP2_1" > § 2.1< / a > < br / > Named Action Patterns - < a href = "5-nap.html#SP1" > § 1< / a > < br / > Command Grammars - < a href = "5-cg.html#SP7" > § 7< / a > < br / > Command Grammar Lines - < a href = "5-cgl.html#SP2" > § 2< / a > , < a href = "5-cgl.html#SP8" > § 8< / a > < br / > Noun Filter Tokens - < a href = "5-nft.html#SP2" > § 2< / a > < br / > Tokens Parsing Values - < a href = "5-tpv.html#SP1" > § 1< / a > < br / > General Parsing Routines - < a href = "5-gpr.html#SP4" > § 4< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > packaging
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R_kind< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > LocalVariables::deduced_function_kind< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > kernel_name< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > , *< / span > < span class = "identifier-syntax" > public_name< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > currently_compiling_iname< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > allocated_pointers< / span > < span class = "plain-syntax" > ) ||< / span >
< span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > no_formal_parameters_needed< / span > < span class = "plain-syntax" > > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > kernel_name< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Produce::kernel< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > public_name< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > needed< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > LocalVariables::count< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > kernel_name< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > needed< / span > < span class = "plain-syntax" > ++;< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > TargetVMs::allow_this_many_locals< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::vm< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > needed< / span > < span class = "plain-syntax" > ) == < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_2" class = "named-paragraph-link" > < span class = "named-paragraph" > Issue a problem for too many locals< / span > < span class = "named-paragraph-number" > 5.2< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LocalVariables::declare< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::end_block< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
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< span class = "plain-syntax" > < / span > < a href = "2-emt.html#SP3" class = "function-link" > < span class = "function-syntax" > Emit::routine< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > kernel_name< / span > < span class = "plain-syntax" > ?< / span > < span class = "identifier-syntax" > kernel_name:public_name< / span > < span class = "plain-syntax" > ,< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R_kind< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > currently_compiling_inter_block< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > kernel_name< / span > < span class = "plain-syntax" > ) < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Compile an outer shell routine with the public-facing name< / span > < span class = "named-paragraph-number" > 5.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Frames::Blocks::end_code_blocks< / span > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_nnp< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > Frames::remove_nonphrase_stack_frame< / span > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Frames::remove_current< / span > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::end_main_block< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > save< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP5_1" class = "paragraph-anchor" > < / a > < b > § 5.1. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Compile an outer shell routine with the public-facing name< / span > < span class = "named-paragraph-number" > 5.1< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > returns_block_value< / span > < span class = "plain-syntax" > =< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Kinds::Behaviour::uses_pointer_values< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > kind_returned< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_package< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > block_package< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Produce::block< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > public_name< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_symbol< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > I7RBLK_symbol< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_1_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Compile I6 locals for the outer shell< / span > < span class = "named-paragraph-number" > 5.1.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > NBV< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_1_2" class = "named-paragraph-link" > < span class = "named-paragraph" > Compile some setup code to make ready for the kernel< / span > < span class = "named-paragraph-number" > 5.1.2< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_1_3" class = "named-paragraph-link" > < span class = "named-paragraph" > Compile a call to the kernel< / span > < span class = "named-paragraph-number" > 5.1.3< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_1_4" class = "named-paragraph-link" > < span class = "named-paragraph" > Compile some teardown code now that the kernel has finished< / span > < span class = "named-paragraph-number" > 5.1.4< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rtn.html#SP5_1_5" class = "named-paragraph-link" > < span class = "named-paragraph" > Compile a return from the outer shell< / span > < span class = "named-paragraph-number" > 5.1.5< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::end_block< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < a href = "2-emt.html#SP3" class = "function-link" > < span class = "function-syntax" > Emit::routine< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > public_name< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R_kind< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > block_package< / span > < span class = "plain-syntax" > );< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5" > § 5< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5_1_1" class = "paragraph-anchor" > < / a > < b > § 5.1.1. < / b > Suppose the routine has to return a list. Then the routine is compiled
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with an extra first parameter (called < span class = "extract" > < span class = "extract-syntax" > I7RBLK< / span > < / span > ), which is a pointer to the
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block value in which to write the answer. After that come all of the call
parameters of the phrase (but none of the "let" or scratch-use locals). If,
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on the other hand, the routine returns a word value, < span class = "extract" > < span class = "extract-syntax" > I7RBLK< / span > < / span > is placed
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after the call parameters, and is used only as a scratch variable.
< / p >
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< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Compile I6 locals for the outer shell< / span > < span class = "named-paragraph-number" > 5.1.1< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > returns_block_value< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > I7RBLK_symbol< / span > < span class = "plain-syntax" > = < / span > < a href = "2-emt.html#SP3" class = "function-link" > < span class = "function-syntax" > Emit::local< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > K_number< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "I7RBLK"< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "pointer to return value"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LocalVariables::declare< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > TRUE< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (!< / span > < span class = "identifier-syntax" > returns_block_value< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > I7RBLK_symbol< / span > < span class = "plain-syntax" > = < / span > < a href = "2-emt.html#SP3" class = "function-link" > < span class = "function-syntax" > Emit::local< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > K_number< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "I7RBLK"< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "pointer to stack frame"< / span > < span class = "plain-syntax" > );< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5_1" > § 5.1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5_1_2" class = "paragraph-anchor" > < / a > < b > § 5.1.2. < / b > We allocate memory for each pointer value used in the stack frame:
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< / p >
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< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Compile some setup code to make ready for the kernel< / span > < span class = "named-paragraph-number" > 5.1.2< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::push< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < a href = "2-hrr.html#SP4" class = "function-link" > < span class = "function-syntax" > Hierarchy::find< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > I7SFRAME_HL< / span > < span class = "plain-syntax" > ));< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > pointer_allocation< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > allocated_pointers< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > next_in_frame< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > offset_past< / span > < span class = "plain-syntax" > > < / span > < span class = "identifier-syntax" > NBV< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > NBV< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > offset_past< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP4" class = "function-link" > < span class = "function-syntax" > Hierarchy::find< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > STACKFRAMECREATE_HL< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::inv_call_iname< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::down< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::val< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > K_number< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > LITERAL_IVAL< / span > < span class = "plain-syntax" > , (< / span > < span class = "identifier-syntax" > inter_ti< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > NBV< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::up< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > pointer_allocation< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > allocated_pointers< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > next_in_frame< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < a href = "4-rsfk.html#SP22" class = "function-link" > < span class = "function-syntax" > RTKinds::emit_heap_allocation< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > allocation< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > =0; < / span > < span class = "identifier-syntax" > i< / span > < span class = "function-syntax" > < currently_compiling_in_frame-> < / span > < span class = "identifier-syntax" > no_formal_parameters_needed< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > ++) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > nonlocal_variable< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > nlv< / span > < span class = "plain-syntax" > = < / span > < a href = "4-tv.html#SP3" class = "function-link" > < span class = "function-syntax" > RTTemporaryVariables::formal_parameter< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::push< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < a href = "4-vrb.html#SP4" class = "function-link" > < span class = "function-syntax" > RTVariables::iname< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > nlv< / span > < span class = "plain-syntax" > ));< / span >
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< span class = "plain-syntax" > }< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5_1" > § 5.1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5_1_3" class = "paragraph-anchor" > < / a > < b > § 5.1.3. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Compile a call to the kernel< / span > < span class = "named-paragraph-number" > 5.1.3< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::inv_primitive< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > STORE_BIP< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::down< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::ref_symbol< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > K_value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I7RBLK_symbol< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > returns_block_value< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP4" class = "function-link" > < span class = "function-syntax" > Hierarchy::find< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > BLKVALUECOPY_HL< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::inv_call_iname< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::down< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::val_symbol< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > K_number< / span > < span class = "plain-syntax" > ,< / span > < span class = "identifier-syntax" > I7RBLK_symbol< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::inv_call_iname< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > kernel_name< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::down< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LocalVariables::emit_parameter_list< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::up< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > returns_block_value< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::up< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
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< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::up< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5_1" > § 5.1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5_1_4" class = "paragraph-anchor" > < / a > < b > § 5.1.4. < / b > Here we deallocate all the memory allocated earlier.
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< / p >
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< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Compile some teardown code now that the kernel has finished< / span > < span class = "named-paragraph-number" > 5.1.4< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > no_formal_parameters_needed< / span > < span class = "plain-syntax" > -1; < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > > =0; < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > --) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > nonlocal_variable< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > nlv< / span > < span class = "plain-syntax" > = < / span > < a href = "4-tv.html#SP3" class = "function-link" > < span class = "function-syntax" > RTTemporaryVariables::formal_parameter< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::pull< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < a href = "4-vrb.html#SP4" class = "function-link" > < span class = "function-syntax" > RTVariables::iname< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > nlv< / span > < span class = "plain-syntax" > ));< / span >
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< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > pointer_allocation< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > currently_compiling_in_frame< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > allocated_pointers< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > =< / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > next_in_frame< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP4" class = "function-link" > < span class = "function-syntax" > Hierarchy::find< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > BLKVALUEFREEONSTACK_HL< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::inv_call_iname< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > iname< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::down< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::val< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > K_value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > LITERAL_IVAL< / span > < span class = "plain-syntax" > , (< / span > < span class = "identifier-syntax" > inter_ti< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > pall< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > offset_index< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::up< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
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< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::pull< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < a href = "2-hrr.html#SP4" class = "function-link" > < span class = "function-syntax" > Hierarchy::find< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > I7SFRAME_HL< / span > < span class = "plain-syntax" > ));< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5_1" > § 5.1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5_1_5" class = "paragraph-anchor" > < / a > < b > § 5.1.5. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Compile a return from the outer shell< / span > < span class = "named-paragraph-number" > 5.1.5< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::inv_primitive< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > RETURN_BIP< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::down< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::val_symbol< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > K_value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I7RBLK_symbol< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Produce::up< / span > < span class = "plain-syntax" > (< / span > < a href = "2-emt.html#SP2" class = "function-link" > < span class = "function-syntax" > Emit::tree< / span > < / a > < span class = "plain-syntax" > ());< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5_1" > § 5.1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP5_2" class = "paragraph-anchor" > < / a > < b > § 5.2. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Issue a problem for too many locals< / span > < span class = "named-paragraph-number" > 5.2< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_TooManyLocals< / span > < span class = "plain-syntax" > ),< / span >
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< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "there are too many temporarily-named values in this phrase"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "which may be a sign that it is complicated enough to need breaking up "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "into smaller phrases making use of each other. "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "The limit is 15 at a time for a Z-machine project (see the Settings) "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "and 256 at a time for Glulx. That has to include both values created in the "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "declaration of a phrase (e.g. the 'N' in 'To deduct (N - a number) points: "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "...', or the 'watcher' in 'Instead of taking something in the presence of "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "a man (called the watcher): ...'), and also values created with 'let' or "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "'repeat' (each 'repeat' loop claiming two such values) - not to mention "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "one or two values occasionally needed to work with Tables. Because of all "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "this, it's best to keep the complexity to a minimum within any single phrase."< / span > < span class = "plain-syntax" > );< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rtn.html#SP5" > § 5< / a > .< / li > < / ul >
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< nav role = "progress" > < div class = "progresscontainer" >
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< / nav > <!-- End of weave -->
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< / main >
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< / body >
< / html >