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expression parser; first pass.

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This commit is contained in:
Miguel Lechon
2021-09-07 18:16:57 +02:00
parent c0a56dbcda
commit c6c790e50d
10 changed files with 478 additions and 13 deletions
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source/md.h
+10 -4
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@@ -681,11 +681,13 @@ struct MD_ParseResult
typedef enum MD_ExprOperatorKind
{
// TODO(mal): We could improve this naming scheme
MD_ExprOperatorKind_Null,
// TODO(mal): Improve this naming scheme ?
MD_ExprOperatorKind_Prefix,
MD_ExprOperatorKind_Postfix,
MD_ExprOperatorKind_Binary,
MD_ExprOperatorKind_BinaryRightAssociative,
MD_ExprOperatorKind_COUNT,
} MD_ExprOperatorKind;
typedef struct MD_ExprOperator MD_ExprOperator;
@@ -715,8 +717,12 @@ struct MD_ExprOperatorList
typedef struct MD_ExprOperatorTable MD_ExprOperatorTable;
struct MD_ExprOperatorTable
{
// TODO(allen): @expr_parser fill this in however needed
int foo;
// TODO(mal): Something faster; arrays indexed by op kind or hash table...
MD_ExprOperatorList table[MD_ExprOperatorKind_COUNT];
MD_ExprOperator *call_op;
MD_ExprOperator *subscript_op;
MD_MessageList errors;
};
@@ -826,7 +832,7 @@ struct MD_FileIter
((l)->next=(n),(l)=(n),zset((n)->next)))
#define MD_QueuePop_NZ(f,l,next,zset) ((f)==(l)?\
(zset(f),zset(l)):\
(f)=(f)->next)
((f)=(f)->next))
#define MD_StackPush_N(f,n,next) ((n)->next=(f),(f)=(n))
#define MD_StackPop_NZ(f,next,zchk) (zchk(f)?0:(f)=(f)->next)